feat(resources): bundle color themes and compiled xterm-ghostty terminfo

Makes the resources directory self-contained like Ghostty's share/ghostty:
- themes/: the 463 iTerm2-Color-Schemes themes Ghostty 1.3.1 ships
  (release 20260216-151611-fc73ce3), with the upstream MIT license.
- terminfo/: xterm-ghostty compiled with `tic -x` from the terminfo
  source generated by ghostty-termio; `infocmp -x` is identical to the
  installed Ghostty's entry.

The generator script and resources-dir discovery changes follow in a
separate commit.

Test Plan:
- TERMINFO=resources/terminfo infocmp -x xterm-ghostty

resources/themes/Apple Classic

@@ -0,0 +1,22 @@
+palette = 0=#000000
+palette = 1=#c91b00
+palette = 2=#00c200
+palette = 3=#c7c400
+palette = 4=#1c3fe1
+palette = 5=#ca30c7
+palette = 6=#00c5c7
+palette = 7=#c7c7c7
+palette = 8=#686868
+palette = 9=#ff6e67
+palette = 10=#5ffa68
+palette = 11=#fffc67
+palette = 12=#6871ff
+palette = 13=#ff77ff
+palette = 14=#60fdff
+palette = 15=#ffffff
+background = #2c2b2b
+foreground = #d5a200
+cursor-color = #c7c7c7
+cursor-text = #8c8c8c
+selection-background = #6b5b02
+selection-foreground = #67e000